Mumbaikars who are planning to take a break from the heat and head towards the beach may want to reconsider their plans as Mumbai beaches have suddenly turned home to venomous blue bottle jellyfish. And these jellyfish are sparing no one with their stings.In the past few days over 50 people have been injured and left in pain by these fishes. Locals near the beach are however helping people get rid of stings. Blue bottle jellyfish, which also goes by the name of Portuguese man-of-war are spotted around Mumbai during monsoon season. They come to the shore for reproduction. The long tentacles of jellyfish can cause extreme pain when comes in contact with humans. Although, the venomous sting can kill fish but not humans.